John A. Helms is professor emeritus, Department of Environmental Science, Policy, and Management, University of California-Berkeley, and chair, Forest Science and Technology Board, Society of American Foresters, Bethesda, Maryland.

John A. Helms is professor emeritus, Department of Environmental Science, Policy, and Management, University of California-Berkeley, and chair, Forest Science and Technology Board, Society of American Foresters, Bethesda, Maryland.